em6521 EM Microelectronic, em6521 Datasheet - Page 4

• Manufacturer Part Number: em6521
• Description: Mfp Version Of Em6621 Ultra Low Power Microcontroller With 4x20 Lcd Driver
• Manufacturer: EM Microelectronic

1
Copyright © 2005, EM Microelectronic-Marin SA
Chip
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
1
2
3
4
5
6
7
8
9
Pin Description for EM6521
TQFP
52
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
1
2
3
4
5
6
7
8
9
R
DIL
64
10
11
12
13
14
15
16
18
19
20
21
22
23
26
27
28
29
30
31
33
34
35
36
37
38
39
42
43
44
45
46
47
49
50
Signal Name
SEG[20]
SEG[19]
SEG[18]
SEG[17]
SEG[16]
SEG[15]
SEG[14]
SEG[13]
SEG[12]
SEG[11]
SEG[10]
COM[1]
COM[2]
COM[3]
COM[4]
SEG[9]
SEG[8]
SEG[7]
SEG[6]
SEG[5]
SEG[4]
SEG[3]
SEG[2]
SEG[1]
PSP[0]
PSP[1]
PSP[2]
PSP[3]
Reset
PB[0]
Test
VL1
VL2
VL3
internal pull-down 15 KOhm
internal pull-down 15 KOhm
Voltage multiplier level 1
Voltage multiplier level 2
Voltage multiplier level 3
Input/output , open drain
Input/output , open drain
Input/output, open drain
serial port : Ready/CS
parallel out terminal 0
parallel out terminal 1
parallel out terminal 2
parallel out terminal 3
Input reset terminal,
Output , open drain
Output , open drain
serial port : SOUT
Input test terminal,
serial port : SCLK
LCD back plane 1
LCD back plane 2
LCD back plane 3
LCD back plane 4
LCD Segment 20
LCD Segment 19
LCD Segment 18
LCD Segment 17
LCD Segment 16
LCD Segment 15
LCD Segment 14
LCD Segment 13
LCD Segment 12
LCD Segment 11
LCD Segment 10
LCD Segment 9
LCD Segment 8
LCD Segment 7
LCD Segment 6
LCD Segment 5
LCD Segment 4
LCD Segment 3
LCD Segment 2
LCD Segment 1
port B terminal 0
serial port : SIN
Function
4
Not used if 3 times multiplexed
Except when needed for MFP
For EM tests only, ground 0 !
LCD level 1 input, if external
LCD level 2 input, if external
LCD level 3 input, if external
Serial interface Ready CS
Serial interface clock I/O
Serial interface data out
Serial interface data in
parallel data[0] in/out
parallel data[1] in/out
parallel data[2] in/out
parallel data[3] in/out
Port B data[0] I/O or
supply selected
supply selected
supply selected
programming
Ck[1] output
Main reset
Remarks
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EM6521